anonymous
  • anonymous
What is the quadratic function that is created with roots -3 and 1 and a vertex at (-1, -8)?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
srry roots r the x values rite
anonymous
  • anonymous
so we would model this in vertex form
anonymous
  • anonymous
lets go over this together

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anonymous
  • anonymous
ill wait till u reply
anonymous
  • anonymous
r u there
anonymous
  • anonymous
tsunamiiii reply
anonymous
  • anonymous
yes
anonymous
  • anonymous
ok so do u remember vertex form.
anonymous
  • anonymous
what wud the equation be
anonymous
  • anonymous
f (x) = a(x - h)2 + k ?
anonymous
  • anonymous
yeah
anonymous
  • anonymous
i mean.. y equals a brackets x minus h... etc
anonymous
  • anonymous
so it called vertex form for a reason.. (h,k) is the coordinate of the vertex
anonymous
  • anonymous
so youd insert that in the equation . y = a(x+1)2 - 8
anonymous
  • anonymous
u can insert a coordinate into the equation and solve for a
anonymous
  • anonymous
because u already have the (-3,0) and (1,0) , u can sub that into the equation i wrote and solve for the a value
anonymous
  • anonymous
so try this: 0 = a(1+1)2 - 8
anonymous
  • anonymous
do u understnad so far
anonymous
  • anonymous
yes
anonymous
  • anonymous
ok tell me what u get as your answer
anonymous
  • anonymous
u got it..

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